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Volume 44 Issue 4
Apr.  2022
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LI Tong, SHEN Ying, PAN Wensheng, SHAO Shihai, TANG Youxi. A Timing Asynchronous Full Duplex Digital Self-interference Suppression Method by Segment Convolution[J]. Journal of Electronics & Information Technology, 2022, 44(4): 1395-1401. doi: 10.11999/JEIT210024
Citation: LI Tong, SHEN Ying, PAN Wensheng, SHAO Shihai, TANG Youxi. A Timing Asynchronous Full Duplex Digital Self-interference Suppression Method by Segment Convolution[J]. Journal of Electronics & Information Technology, 2022, 44(4): 1395-1401. doi: 10.11999/JEIT210024

A Timing Asynchronous Full Duplex Digital Self-interference Suppression Method by Segment Convolution

doi: 10.11999/JEIT210024
Funds:  The National Natural Science Foundation of China (U19B2014, 61771107, 62071094, 61701075, 61601064, 61531009), The National Key R&D Program of China (2018YFB1801903), The Science and Technology Program of Sichuan Province (2020YFH0101)
  • Received Date: 2021-01-08
  • Rev Recd Date: 2021-06-09
  • Available Online: 2021-08-24
  • Publish Date: 2022-04-18
  • At the Co-frequency and Co-time Full Duplex (CCFD) multi-carrier signal time asynchronous scenario,, the maximum multipath time offset between the Signal of Interest (SoI) and the Self-Interference (SI) exceeds the length of the Cyclic Prefix (CP), which causes the decrease of the performance in the frequency domain self-interference cancellation. In view of this problem, a timing asynchronous self-interference suppression method by segment convolution is proposed; The relationship between the SI and the SoI is analyzed; The SI suppression process is established. Theoretical and simulation results show that the cancellation performance in the asynchronous state is equivalent to that in the synchronous state.
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